Sometimes when syncing your Discord, you may end up linking a different account than the one you intended.
We unfortunately cannot change this for you. This closed system is 100% controlled by bots and automation.
1. Sign out of discord on web browser (even if you primarily use the application).
2. Return to your account settings and begin to link your discord again.
3. Still linking the wrong account? Visit discord and delete these extra accounts.
Again, please follow the steps above as we cannot manually edit your discord credentials for you.